Hi Derek,
The problem is that then the figures also have to be entered bottom-up, e.g. <4 2> instead of <2 4>. Someone posted a function some time ago that did this automatically, I'll see if I can find it.
It was (as often) Harm who did this: http://lilypond.1069038.n5.nabble.com/Another-Figured-Bass-problem-tp212469p212514.html
Best Lukas
